Typewriting-machine



F. A. HART.

TYPEwmTmG MACHINE.

nPPLlcAloN FILED APR. 6. isla.-

mama Nov. 2, 1920.

l lllEETl-IIIET 2.

wrTN5SES=- mgkmm fr NEN.

F. A. HART.

TYPEWRITING MACHINE. MPucmon man Ams. wrap Patented Nov. 2, 1920.

, ,357,557 s :mn-snm 1.

`10 part of a typewritin UNITED STATES PATENT OFFICE.

FREDERICK A. HART, F NEWARK, NEW JERSEY. ASSIGNOR T0 UNDERWOOD COM- PUTING MACHINE COMPANY, 0F NEW YORK, N. Y., A CORPORATION OF NEW YORK.

To all whom it may concern.: y

Be it known that I, FREDERICK A. HART, a citizen of the United States, residing in Neviark, in the county of Essex and State of New Jersey, have invented certain new and useful `Improvements in Typewriting-Machilies, of which the following is a specilisation.

This invention relates to means forming machine for automatically pointing o or spacing between figures, as between dollars and cents and lbetween hundreds and thousands,ctc., in Writing numbers, whereby the operator is relieved of vU5 the necessity of printing commas or periods N oi" operatinge space key to effect such spacing.y f

In my co-pending applicatioiisNo. 79,969, liled,l1` brua`ry 23, 1916, now Patent No. 1,282,823, granted October 29, 1918, and No. 88,QBL-i-filedl April 5, 1916, now Patent No. .1,3Q2',159granted April 29, 1919,l I have shipwin spacingineans by which the spacing or pointing off between digits is controlled by the carriage escapement mechanism. said mechanism comprising,r an escapement dog which has a variable throw to vary the letter-feed movement of the carriage. The

throw of said dog is controlled by a stop device, which is operable to vary the stop position ofsaid dog.

In said Patent No. 1,302,159 said stop device is controlled from the totalizer of the computing mechanism, said totalizer being adjustable on the carriage to determine the computing zone and having means to automatically operate said stop device at a predetermined position of the carriage in the com uting zone, to effect double-space lettereed movements of the carriage and thereby s ace between the digits of the numbers being written at the desired' denominational positions. Said Patenty No. 1,302,159 further discloses case-shifting mechanism, a non-computing key for silencing the computing mechanism, and means for automatically silencing the said doublespacing means when either the non-computing keyV or a case-shift key is actuated.

An object of the` present invention is to provide an improved form of mechanism for actuating the stop device Vfor the escapement dog vwhich controls the lgplllb-space movements of the carriage, sai mechanism Specification of Letters Patent.`

Alipiication ined April e,

TYPEWRITINGMAGHINE.

Patented Nov. 2, 1930.

1916. Serial No, 89,254.

being arranged to control thel Stop device from a convenient point on the carriage, through connections wlhichxare sim le and direct. Preferably there is provide lrthe i carriage, in the rear o the platen, an actaator for setting the stop device to permity i, double-space movement o1e the carriage, which actuator may lieadjustably iunted on a rack 0n the carriage adjaeenttohe usual tabulator rack. Said actuatoixiniy be iositioued to intercept tappets on a swingingbail mounted on the machine frame to thereby automatically actuate said bail during the letter-feed travel of the carriage, and through suitable connections between said bail and the stop device which controls the escapement dog, position said stop device to cause double letter-space movements of the carriage at points at which it is desired to space between digits of the number being written. The said actuator for controlling the double-spacing means, may consist of a plate adjustable through letterspace intervals along its supporting rack to any desired position lengthwise of the platen., which position may be determined by that of a set tabulator stop.

The invention may be used in connection Vwith a machine in which the tabulator mechanism comprises a rack having stops at letter-space intervals, which stops may be se-4 lectively set to operative position. A scale may ber'provided adjacent the rack carry-` ingsaid actuator or actuators, so that the latter may be rcadilv set to positions corrersponding to those of the set tabulator sto s.

he computing mechanism may be simi en to that disclosed in the Patent No. 1,302,159, above referred to` imd'may comprise a nonadd or disconnect key to silence the computingr mechanism. said lrev also operating means to silence the double-spacing mechanism.

As shown in the present application, the non-add or disconnect key operates through suitable connections to swing a frame pivotally mounted on the machine frameand carrying said tappeted bail, to Swing the latter out of the path of the actuatorsl on the carriage and thereby prevent the doublespacing operations. The platen-shifting frame by which the platen is shifted to upper-case position may also have "onnection with said swinging frame for silencing the double-spacing mechanism when a shiftke is operated.y

''he automatic douhle-sj'iacingir mechanism may in some instances he used independently of the computing mechanism, or on typewriting machines without computing mechanism.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure 1 is a part-sectional side elevation gf a combined typewriting and computing iachine constructed in accordance with the principles of the present invention.

Fig. 2 is a fragmentary front perspective view, showing particularly the esciipement mechanim, the tappeted hail controlling;r the stop device for the escapement dog, and the actuator for said hail.

Fig. 3 is a front view of the escapement mechanism, with the parts in their normal position of rest, in which the escapmnent Wheel is held hy the loose dog.

Fig. 4 is a similar view, hut with the est'zapement wheel held hy the fixed dog, the loose dopr heini.;r positioned for normal letter feeding hy the variahle stop device.

, l*`ig.,5 is a view similar to Fig. 4, except that the .stop device is positioned to permit a double-space throw of the loose dog.

Fig. 6 is a schematic view oi the invention.

The typewriting machine which, in most respects, is the same 'as the usual commercial llnderwood machine, comprises a carriage 1U mounted to travel on trout and rear lguide rails ll and'l2, the carriage hein;r iropelled hy a spring motor 1li connected t irough a hand 14 to the carriage. i\ roller platen 15 has an axle 1G journaled inlhe platen frame I7 shit'tahle up and down onk the carriage to hring the platen to upper and lo\\'ci'case positions. A shift-key lH fulcrunied as usual in the Underwood typewritiiig niachine at i9 has an arm 2H extending ilpwnrilly hehind the platen shift frame 2l fulrunied at 22 and comprisiing a shift rail 23 on which runs u roller 24 on the platen i'ramc. When the shift-key is depressed, the shiftd'rame 2l is operhted to shift the platen to upperasc position.

,fypefbars 25 carrying,- upper and lower easwt -`ies 2li, 2T, are mounted on a i'iilcruin cod ZVS swirl,"r upwardly and rearwardly, t0 ci'usc 1fthe types to strike against the front face olkl the platen. Alphabet, keys 2! and numeral keys 'l'l are fulcriiined ai l!) and are connected through hcll-cranl s 2li to their respective type-hars l'or actuating,r the latter.

The escupement mechanism which controls the lcttcr-l'ceil movements oi' the carriage, comprises an cscapemcnt whcff 32 having a onc\\'a v driving connection through dogs Ill with au escapeirient pinion 2&4-, which runs in iucsh with a` carriage rack 35, thc latter carried hy arms lti pivotally MThe stops mo nted on the carriage to permit the rack 35 o he swung oft' tlie,escapement pinion. The escapement wheel 32 has a step-hy-step movement controlled hy a fixed dog 3T fixed on a dogwocker 38 and a loose dog Ililnpivoted at 4f) to the dog-rocker. The latter is actuated at each type-stroke hy'mcans of a. universal har 41 in the path oi' shoulders 42- on the type-hars, so that wheh a type-har is moved to printing position, the universal har 41 swings the upper cnd of the dogrockcr rearwardly. 'l he universal har is returned hy a spring 43 when the type-bar returns to normal position. l-`i,i gs. 2 and 3 A,now the parts in their normal position of rest, wherein the escapement wheel is held hy the loose dog 39 against which hears one of the teeth 44 ot the escapement wheel;

"hen a type-har is operated and the upper end of the dogrocker 38 is swungr rearwardly, as above noted, the fixed dog 37 is brought into the path of said tooth and holds the escapement wheel while the loose dog is moved rearwardly out of engagement with said tooth and therehy released to its sprinplr 45, which swings the dog to the left iilitil arrested hy a stop 46 (Fig. 4) in the path of a pin 4U" on the dog.

As the actuated type-har returns and permits the universal har to he returned hy its spring;y 43, the spring 47 returns the dogrocker 3H, thcrehy swinging the pivoted dog I!) forward in front of the next tooth of the cscapement wheel, and also swings the fixed dog Il? forward out ol' the path of the wheel, permitting the latter, under the influence of the carriage spring, to he rotated the distance of one tooth` that is, a normal letter'- space distance. The pivoted dog, during` this movement of the wheel, `is swung to the 4right until arrested hy a stop on the dogiocker.

rlahulator mechanism may he provided comprising;r tahiilator keys 47 connected to levers 48 pivot'ed at 49 to operate decimaltahulator stops 5U, 1said stops heilig iu ,the form of vertical hars or plungers mounted for vertical movement in a tahulator frame 1 (olumnstops 52 are mounted at letter- )ace intervals on a rack 53 on the carriage. 'Y n 52, as shown, are mounted for a. limited vertical movement in the rack har 5'25, so that any desired stop may he set or moved downward in the rack to operative position, namely, to a position to he intercepted hy any denomination stop 50 which has heen projected hy depressing its key 47. ll`he stops 52 may he selectively set as desired hy any suitahle torni of key-actuated selective stop-setting mechanism, such as shown, for example, in the patent to Doane No. 1,157,083. v

When any of' the plunger stops 50 is uctuated, it operates through a universal har 54 pivoted at 55 and connected through a link 56 to a lever 57 carr ing a roller 58, to lift the rack-bar 35. T e carriage is thus released from the control lof the escapement mechanism and permitted to run forward until arrested by a set stop 52 engaging the projected stop hthereby positioning the carriage at the column and the denominational position in the column, determined by the operative stops 52and 50, respectively.

The computing mechanism may comprise A one or more totalizers `59 each connected to travel with the carriage by means of a latch 60 en agin a rack bar 61 on the carriage, where Yt e totalizer may be adjusted througli' letter-space intervals to any desired position lengthwise of the carriage. The totalizeiis provided with guide-rollers 59* and 59" to run on a. rail 59 on the machine frame. The totalizer comprises dial wheels 62 and computing Wheels 63 actuated by the computing mechanism mounted on the lmachine frame, said mechanism comprising a master wheel -64 which, during the writing of the several digits of a number, is brought into operative relation with the computing Wheels 63 successively and operates said wheels to run up on the dial wheels the number being written.

The operating means between the numeral ke s 30 and the computing Wheels comprises diderentiators 65 on the numeral-key-levers,

'each diferentiator being in the form of a plate with a cam slot 66. A rod 67 extends across the machine in position to be actuated by any one of said difi'erentiators, said rod being carried by swingingW arms 68 on a` shaft 69.' When any numeral key is depressed, the cam slot 66 of the corresponding dilierentiator is moved downward over the rod 67. so that thc latter is rammed forward. The upper ends oi the slots are in stepped relation, the slots heilig so formed that the extent of movement imparted to the rod 67 will correspond with the value oi' the digit represented hy the .actuated key. so that the, computing mechanism will hc operated a corresponding extent.

The connections between the ditl'erentiator and the computing wheels are as follows: A pin 70 connected to an arm 68 engages a notch in 'a floating lever 71 pivoted at 72 to a lever 73 fulcrumed `at 69.` Said lever 71 is normally held against the pin 71) by a spring 74, so that thc forward movement of the rod 67 when a key. is depressed,.operates through the pin 70 and lever `71 to swing lever 73 about its fulcrum, and t iereby move down` wardl' a link 75 connec d to a rock arm 76 on ais iaft 77. A second arm 78 on the shaft 77 connected through a link 79 to a rack l60, which drives a pinion 81 fixed to a shaft 82. A gear wheel 83 which rotates with the pinion 81, is shiftable by means of an add or` subtract key (not shown) into direct driving lation either to a oinion S4. or a pinion tfthe latter heilig connected to drive the master wheel 64. The pinion H1 may be at all times in driving relation with the pin.- ion In adding, the gear wheel bil drives thc master wheel directly through the pinion in one direction, and in subtracting, the gear wheel 83 operates through the pinions-S-l and 85 to drive the master wheel in the opposite direction. The instruction and operation of the computing mechanism thus far described muy he substantially like that disclosed in the application of Henrv L. Pitman, No. 24.390, filed April 2s, 1915,

now Patent No. 1,308,506, dated July 1,1919.

Before a computing operation,`the totalizer may be'adjusted to a position corresponding to that of the set tabulator stop 52. The numeral keys may be operated in the usual manner to print any desired number. .As each numeral key. is depressed, it operates through the connections above described to rotate the master Wheel 64 through a distance corresponding to the digit of the particular key operated. The master wheel drives the particular computing wheely 63 and dial wheel 62 which are at the time being in register therewith, to run up on the totalizer the corresponding number. Such operation Sat1-s place during the depression of the numeral key. As said key is returned, the escapement mechanism permits the carriage to advance a letter-s ce distance, thereby bringing the master W eel into register with the next succeeding computing wheel 63.

In order to automatically point off or' space at the decimal positions and between the digits in the hundreds and thousands positions, ctc., mechanism is provided for automatically effecting a double-space letterfeed movement of the carriage when such positions are reached. For this purpose; the throw of the loose dog 39 of the escapcment mechanism is variably controlled by a shittahle stop device 86 in the form of a lever pivotcd 'in a stud 87 on the cscapemcnt franc, thc le`vcr being held against endwisc 'causing a double space movement, by means ofan actuator 99 on the carriage, which depresses tappets 90 on a bail 91 pivoted at 92 to a swinging frame 93 mounted by pivots 94 on the tabulator frame 51. The bail 91 comprises a forwardly-extending arm 95 connected through a link 96 to a rearwardly extending arm 86 of the stop device 86.* A spring 97 is connected to the arm 95 to pull Vdownwardly thereon ,and thereby normally hold the 'stop device 86 to the-Fig.

3 position, in which the stop 40 is operative, the moFement of the stop device h v said spring,r heilig limited hy a projection S18 thereon strikingl the eseapement frame. The spring 11T holds the tappets or cams 90 111 thc path ot' the actuator 99 which may he 111 the form of a plate renmvahly mounted on a rack har 100 extending lengthwise of the carriage. said plate being adjustable t0 any desired letter-space position along the rack.

The actuator 99 is adjusted with respect to the set tahulator stop 52 or the position of the totalizer which determines the compittingr onen` so that the double-space movements of the carriage will take place at the desired denominational positions. The ratk har V100 may he'connected to the tabulator rack bar :'13 by means of brackets 101. A lgraduated scale 102, which may be conven- 1ently mounted on the rack har 53, facilitates the quick and accurate setting ot the actuator 90 to correspond with the set. tehuiator stop and the position of the totulizer.

To explain the operation of the doublespacing mechanism, let it he assumed that the totalizer is in the computing zone at the ten-thousands osition. If now a numeral key is operate( to print a digit in such position. the carriage will, upon the return of the` key. advance aA single letter-space distance. as usual'xthe escapement wheel, duringr such advance of the carriage, operating to `swing the loose dog from the Fig. 4 position to the Fig. 3 position. During this movement of the carriage, however, a tappet n0 strikes the actuator 99.y and the hail 91 is swung downwardly, and through the link 96 swings the stop device 86 from the Fig. 4 position to the Figz position. The carriage is now at the thousands srtion. so that the next numeral key struc prmts in the thousands place. During this printing operation. the dog-rocker 38 is swung rearwardly. as usual. to release the loose dog, which is now permitted to swing to the Fig. position. owing to the position of the stop device Hl. so that when the dog-rocker is returned. the loose dog permits the escapement wheel to advance n distance ot` two teeth. thereby ett'ecting a douhlc letter-space movement ot' the carriage. Thus, the next operated numeral key will print in the hundreds place. a douhle letter-space in advance of the precediimr digit, The double-space movement ot' the carriage moves the plate 99 ott' the tappet 90. so that the stop device 86 is reset to the Fig. 3 position. whereby the carriage will only he permitted a single letter-space movement at the next printing 0perution. The succeeding tappet will operate at the proper time to space at the decimal position.

A non-add" or silencing key 103 for th;- computing mechanism is connected through a link 104 to un arm 1.05 of a'l'vr 106 nivoted at 10T. Said lever comprises an arm 10H having a lug 10h*i to engage the lever 71. so that' when the key 103 is thrown forward, the lever 71 is thereby depressed to release it from the pin 70.y so that the ditferentiators on the numeral keys will swing the bar 67 idly when the numeral keys are o minted, without affecting thc computing mec anism.

In order to silence the double-spacing mechanism when the key 103 is operated, the swinginr frame 93, which carries the tap et hail 91. 1s connected through a link 110 with an arm 111 of the lever 106, so that as the non-add or disconnect key 103 is moved forwardly the link 110 is moved rearwardly and swings the frame 93 to carry the tappet hail 91 forwardly and move the tappets 90 out ot' the path of the actuator 90.

Means tor silencing the douhlo-spacinltgu mechanism` when a platen shift key is operated, comprises a link 112 connecting;AV the upper end of the lever 106 to a pin 1.13: on the shift frame 21. \`Vhen a shift key 18 is depressed.y the movement of the shift frame 21 is transmitted. through the pin 113 and link 112 to the lever 106, the movement of the lever operatingr as before described to swing` the tappet hail tree of the actuator 9S). thus l'neventing an operation of the stop device H0 which would effect a double-space letter-feed movement of the carriage.

The slot-and-pin connection shown between the link 112 and the platen shift frame. permits the key 103 to he operated without affecting said shift trame.

A slot-und-pin connection 11-1 between the key 103 and the link 104 likewise permits the platen-shifting operation to take place without moving the key 103. The caseshift key '1H operates through the mechanism described to silence the con'iputing mechanism as well as the douhle-spacing mechanism. It will he noted that the lever 10G serves as a means for silencing both the computing),r mechanism and the double-spacing' mechanism, and that said lever may he actuated hy either the platen shift key o1' the "non-add" key without affecting the other.

Variations may he resorted to within the scope ot' the invention. and portions of the improvements may he used without others.

Having thus described my invention, I claim:

1.1.11 n typewriting machine. the combination with a carriage and propelling means therefor, of escapemcnt mechanism permitting letter-feed movements o1' the carriage, tahulator mechanism .comprising n series of tahulator stops selectively settuhle to arrest the 'carriage at a selected position. double-spacing mechanism for automatically effecting a double-space letterfeed movement of the carriage, and an actuator for setting said double-spacingmechaiiism for operation, said actuator adjustableto a predetermined position relative to the set tabulator Stop, to thereby determine the position' in which the double-spacing mechanism is brought into activity.

2. In a typevvritingr machine, the combine,- tion with a carriage and propelling means therefor, of escapement mechanism control ling the letter-feed movements of the cnr-- riage, character keys for printing. said keys controlling the escapement mechanism, tabulator mechanism comprising a rack har mounted on the carriage and having,r a series of individually-settable stops, said tahnlator mechanism comprisinga key, a countervstop, and means operated by said key to project the counter-stop into the path of a set stop ano to release the carriage from the control of the escapement mechanism, to permit the carriage to run forward to a position deterA mined by the set stop, and mechanism for effecting a double letter-space movement of the carriage by the operation of a character key when the carriage has reached a prede termined position during` its letter-leed travel, said donhlespacing mechanism comprising an actuator, and a rack on the car riege on which said actuator is mounted for adjustment through letterspace intervals to a position lengthwise of the carriage corresponding to the position of the set tahnlatorA stop, said donhie-spaeiner mechanism corn prising means on the machine frame in the path of said actuator and operated by the latter, to canse said double-space movement of the carriage at a position corresponding to that of the set tabulator Stop.

3. In a typewriter, in mnnbination. :i let ter-spacing carriage, an escapemcnt mechanism therefor comprisinga fixed dog and a loose dog, a vnriablysettahle stop-dcvice to selectively determine the extent of throw ot' said loose doc', said slop-device being;r nor-- n'ially Set to cause said escapemcnt to clicct single letter-spacing movements of said carriage, a tappet on said carriage, and means, rendered effective thereby on moven'icnt of said carriage into a lettcrspncc pt ssition determined hy the location of said tappet', for varying the Setting of said stop-device, so as to permit an amplified throw of said loose dog and tierehy cause said escapement to effect a d nble letter-spacing movement of said carriage at itsinext letterspacing movement.

4. In a typewriter, in combination, a lctter-spacing carringe, an escnpement n1echanism therefor crnnpi'isingr'n. fixed "dog: and a. loose-flog. o 'varialdysettahle snm-device to selectively determine the extent oi' throw ol' said loose dog, seid stop-device heilig normally svt to cause Suid escapelncnt to ctl'crl` single hitter 7spacing movements of said carriage, e tappet on Said carriage, and. means, rendered elective thereby on movement of said carriage into a letter-space position determined by the location of said tappet, for varying the settingv of said stopdevice, so as to permit an amplified throw of said loose dog and thereby cause said escepernent to effect a double letter-spacing movement of said carriage at its next letterspacing movement, the carriagecontrolled setting means being freed from control hy said tappet during such doubleI letter-spacing movement of said carriage, so as to permit said stop-device to be restored to its setting determinative of single lettenspacing movements ol' said carriage.

5. In a typewriting machine, the combi nation with a letter-feeding carriage and an elapement mechanism therefor, ot' a {ixed dogr and a loose dog for feeding: Said carriage, a' sto adapted to variably limit the throw of said loose dog, tahnlating mechatnism for said carriage, including n mountingr there-for, a bail pivotally mounted on said mounting, a connection from said hail to said dog, and a. tappet on said carriage adapted to selectively move said bail to vary the throw of said loose dog. i

In a typewriting machine, the combination with e letter-feeding carriage und an escapement therefor, ir-ichidingir a fixed and a loose dog, ol' a stop .for varyingr the throw ofsaid loose dog, a hai] comprieeiingiF a phxrnlity of tappets, a connection from said hail to said stop, and a lng on'said carriage adapted to coperate with said tzippets to vary the throw of said loose dog.

T. In a typcwriting machine. the combination with a letter-feeding carriage and an escapeinent mechanism therefor, inclnding a fixed and a loose dognof a stop for varyhanr the throw of said loose dog, a bail adjustable relatively to said carriage independently of the escapcmcnt mechanism and comprising a plurality of tappets. :i connection from said bail to seid stop, and a plurality of lugs on said carriage settahlcfto effective or ineffective position` and when eitective adapted to control said stop.

S. In a typew'riting machine, the-combination with a letter-feeding carriage and escapement devices therefor, including;i n fixed dog and a loose dog, of a stop adjust able to vary the throw of said loose dog, e hail adjacent the travel of said typewriter carriage, n connection 'from said bail to said stop, n. rack intr carrying a plurality of tabulating stops forming' a part of a talnllatinnr device, tappcts on said hail, and a second rack har carrying blades adapted to bc set into cll'cctivo position to actnate said bail hy said tappcts :it times coordinated with said tahulating stops.

9. lIn n tyiviewritinny machine. the` combination with a letter-feedingr typewriter car-- ringe and esca-pement devices therefor. in

chilling a fixed dog and a loose dog, of a stop mliustnhle to vary the throw of suiil loose ling. 1| hail :iiljm'ent the travel of Saiil tvvpevliei' vaui'izigle. :i vonneetion from .said huil to ,sniil .stop` :i i'zii'lt han' vnrrying zx` settnlile `stop l'oi' siilistuntiiilly every letterspnf-e in the tet-l of sziiil typmvriter earringe.tzi|r|vett-oiiszii1llmihilseiozillml'ltlml, :wel lilzirles in sniil sw'oiiil wel( hui' normally in inl-Illel-'tive position, hilt :ulnpteil to he Het to position in elim-tive eline-ment with :my fl'er-fi\'1^tzihiihltiiig stop (o :xrllmte suiil huil liy sniil lnppels.

Ill. ln :x typewriting inzu'lline. the roniliiA nation with i leiter-feeding' t \'pe\\'1itei wir ringe unil esfnpemeiit sli-vives therefor', inwhirling n wheel :mit :l fixed :unl a loose dog mfpeinting with sziiil wheel, ol' :l .stop for' varying' the islle thi-ow of sniil loose slug. :i liaiil :nl izueilt the travel of sziiil ty|')e\\'ritei' mii-ringe unil i-oiiiievted to siiiil stop, means for positioning sziiil huil independently of th: mlrilistnient ol' the esi'zipement ileviees.y :unl nii-:ms` nioimterl on the typewriter enri'izige loi' :irtimtilig siliil huil.

hail adjacent the travel ol said tyfw\\^riter carriage and connected to said stop. means for positioning said huil independently ot' the adjustment of the esenpeinent devices, two rzifk hars on said typewriter ezuriuge, lil-ailes mounted in each rack har at letterspm'e intervals therein, and normally inell'eetive, tzihiilzlting stops for cooperating with :my ell'eetive hlmle in one rat'k han', nml lugs on said lmil mlziptetl to r'opeizlte with :my etl'ec'tive lilnfle on the other miek hm'` the :adjustments being slu'h that :ilinerl hlzules :1re effec-tive :it the same letter-spines on the esf'npement mechanism :mil on the *ehuhlting Ixieffhzn'iism. I

l2. In :i typewriting mnehlne the vomhi nation with u letter-feedingillypewriter ear ringe :unl ese-:ipenient devices therefor, in ehielingf :i wheel und a fixed :nul a loose (log cooperating with said wheel, of :i stop for varying: the idle throw of said loose (10g, u huil milan-ent the travel of suiil typewriter marriage and eonneeteil to said stop` hail- :letimting Ine-Ans mounted on the typewriter enrriage, and means for positioningr the hail in or out of the path of said actuating means.

FREDERICK A. H ART. lit ness-es z A imIUR A. JoHNsoN, EDITH B. LIBBEY. 

